Java 类com.intellij.openapi.actionSystem.ShortcutProvider 实例源码

@Override
protected void customizeComponent(JList list, Object value, boolean isSelected) {
  ListPopupStep<Object> step = myPopup.getListStep();
  boolean isSelectable = step.isSelectable(value);
  myTextLabel.setEnabled(isSelectable);
  if (!isSelected && step instanceof BaseListPopupStep) {
    Color bg = ((BaseListPopupStep)step).getBackgroundFor(value);
    Color fg = ((BaseListPopupStep)step).getForegroundFor(value);
    if (fg != null) myTextLabel.setForeground(fg);
    if (bg != null) UIUtil.setBackgroundRecursively(myComponent, bg);
  }

  if (step.isMnemonicsNavigationEnabled()) {
    final int pos = step.getMnemonicNavigationFilter().getMnemonicPos(value);
    if (pos != -1) {
      String text = myTextLabel.getText();
      text = text.substring(0, pos) + text.substring(pos + 1);
      myTextLabel.setText(text);
      myTextLabel.setDisplayedMnemonicIndex(pos);
    }
  }
  else {
    myTextLabel.setDisplayedMnemonicIndex(-1);
  }

  if (step.hasSubstep(value) && isSelectable) {
    myNextStepLabel.setVisible(true);
    final boolean isDark = ColorUtil.isDark(UIUtil.getListSelectionBackground());
    myNextStepLabel.setIcon(isSelected ? isDark ? AllIcons.Icons.Ide.NextStepInverted
                                                : AllIcons.Icons.Ide.NextStep
                                       : AllIcons.Icons.Ide.NextStepGrayed);
  }
  else {
    myNextStepLabel.setVisible(false);
    //myNextStepLabel.setIcon(PopupIcons.EMPTY_ICON);
  }

  setSelected(myNextStepLabel, isSelected);


  if (myShortcutLabel != null) {
    myShortcutLabel.setText("");
    if (value instanceof ShortcutProvider) {
      ShortcutSet set = ((ShortcutProvider)value).getShortcut();
      if (set != null) {
        Shortcut shortcut = ArrayUtil.getFirstElement(set.getShortcuts());
        if (shortcut != null) {
          myShortcutLabel.setText("     " + KeymapUtil.getShortcutText(shortcut));
        }
      }
    }
    setSelected(myShortcutLabel, isSelected);
    myShortcutLabel.setForeground(isSelected ? UIManager.getColor("MenuItem.acceleratorSelectionForeground") : UIManager.getColor("MenuItem.acceleratorForeground"));
  }
}

@Nullable
@Override
public ShortcutSet getShortcut() {
  return myAction instanceof ShortcutProvider ? ((ShortcutProvider)myAction).getShortcut() : null;
}

@Override
protected void customizeComponent(JList<? extends E> list, E value, boolean isSelected) {
  ListPopupStep<Object> step = myPopup.getListStep();
  boolean isSelectable = step.isSelectable(value);
  myTextLabel.setEnabled(isSelectable);
  if (!isSelected && step instanceof BaseListPopupStep) {
    Color bg = ((BaseListPopupStep)step).getBackgroundFor(value);
    Color fg = ((BaseListPopupStep)step).getForegroundFor(value);
    if (fg != null) myTextLabel.setForeground(fg);
    if (bg != null) UIUtil.setBackgroundRecursively(myComponent, bg);
  }

  if (step.isMnemonicsNavigationEnabled()) {
    final int pos = step.getMnemonicNavigationFilter().getMnemonicPos(value);
    if (pos != -1) {
      String text = myTextLabel.getText();
      text = text.substring(0, pos) + text.substring(pos + 1);
      myTextLabel.setText(text);
      myTextLabel.setDisplayedMnemonicIndex(pos);
    }
  }
  else {
    myTextLabel.setDisplayedMnemonicIndex(-1);
  }

  if (step.hasSubstep(value) && isSelectable) {
    myNextStepLabel.setVisible(true);
    final boolean isDark = ColorUtil.isDark(UIUtil.getListSelectionBackground());
    myNextStepLabel.setIcon(isSelected ? isDark ? AllIcons.Icons.Ide.NextStepInverted
                                                : AllIcons.Icons.Ide.NextStep
                                       : AllIcons.Icons.Ide.NextStepGrayed);
  }
  else {
    myNextStepLabel.setVisible(false);
    //myNextStepLabel.setIcon(PopupIcons.EMPTY_ICON);
  }

  setSelected(myNextStepLabel, isSelected);


  if (myShortcutLabel != null) {
    myShortcutLabel.setEnabled(isSelectable);
    myShortcutLabel.setText("");
    if (value instanceof ShortcutProvider) {
      ShortcutSet set = ((ShortcutProvider)value).getShortcut();
      if (set != null) {
        Shortcut shortcut = ArrayUtil.getFirstElement(set.getShortcuts());
        if (shortcut != null) {
          myShortcutLabel.setText("     " + KeymapUtil.getShortcutText(shortcut));
        }
      }
    }
    setSelected(myShortcutLabel, isSelected);
    myShortcutLabel.setForeground(isSelected ? UIManager.getColor("MenuItem.acceleratorSelectionForeground") : UIManager.getColor("MenuItem.acceleratorForeground"));
  }
}

@Nullable
@Override
public ShortcutSet getShortcut() {
  return myAction instanceof ShortcutProvider ? ((ShortcutProvider)myAction).getShortcut() : null;
}

@Nullable
@Override
public ShortcutSet getShortcut() {
  return myAction instanceof ShortcutProvider ? ((ShortcutProvider)myAction).getShortcut() : null;
}

@Nullable
@Override
public ShortcutSet getShortcut() {
  IntentionAction delegate = getDelegate();
  return delegate instanceof ShortcutProvider ? ((ShortcutProvider)delegate).getShortcut() : null;
}